As a leading ASTM A106 Grade B steel pipe supplier in China, we provide high-quality pipes engineered for gas and oil transport applications. This 4-inch pipe features a wall thickness of SCH 80 and a length of 20 feet, ensuring strength and durability for demanding pipeline systems. Equipped with beveled ends and protective caps, it allows for easy welding and secure connections. The black coating offers additional corrosion resistance, enhancing longevity. Designed to meet industry standards, these pipes deliver reliable performance and long-term service in oil, gas, and industrial transport networks.